Dwyer 1207A - Manual (Page 32)

1207A manual Page 32
BAT
Displays the Battery power available in %.
When the LO BAT symbol appears this indicates the batteries are at less
than 10% of charge and should be replaced, readings may be affected if
used with low power batteries. Warning: all stored readings are lost when
the batteries are removed or become exhausted.
DATE :
Date shown as day, month and year. The order can be changed using the
menu function. Date is recorded when each combustion test is printed.
TIME :
The time is shown in hours and minutes, expressed in “Military” time or the
24hr clock. Time is recorded when each combustion test is printed.
Note! When changing the batteries on the instrument the memory will
store the date and time for up to one minute, if outside this time it may be
necessary to re-enter the details.
Date and time may also need to be reset if re-chargeable batteries are allowed to
totally discharge.
SYMBOLS used on the display:
P
Poison Index: measured CO divided by calculated CO
2
multiplied by 100
R CO/CO
2
Ratio: measured CO divided by calculated CO
2
lambda
Excess Air
AMB
Either the internal temperature of the analyzer or the inlet temperature as
measured during the start up sequence
loss triangle Loss%: losses = 100 minus efficiency %
delta T
Nett Temperature
TF
Flue Temperature
eff symbol
Efficiency %
Ħ mg/m
3
normalized
PO
Pump off
-O>-
Oxygen greater than 18% so calculation is disabled
-OC-
Open circuit temperature input